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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. //#include <ntsid.h>
  4. #include <pthread.h>
  5. #include <unistd.h>
  6.  
  7. #define BAD_EXIT 1
  8. #define NUM_TASKS 8
  9.  
  10. char * messages[NUM_TASKS];
  11.  
  12. void * PrintHello(void * taskIdPtr) {
  13.     int taskId;
  14.     sleep(1);
  15.     taskId = *((int *) taskIdPtr);
  16.     printf("Task id = %d, message = %s\n", taskId, messages[taskId]);
  17.     free(taskIdPtr);
  18.     pthread_exit(NULL);
  19. }
  20. int main(int argc, char ** argv) {
  21.     pthread_t threads[NUM_TASKS];
  22.     int * taskIdPtr;
  23.     int rc, t;
  24.     messages[0] = "English: Hello World!";
  25.     messages[1] = "French: Bonjour, le monde!";
  26.     messages[2] = "Spanish: Hola al mundo";
  27.     messages[3] = "Klingon: Nuq neH!";
  28.     messages[4] = "German: Guten Tag, Welt!";
  29.     messages[5] = "Russian: Zdravstvytye, mir!";
  30.     messages[6] = "Japan: Sekai e konnichiwa!";
  31.     messages[7] = "Latin: Orbis, te saluto!";
  32.  
  33.     for(t = 0; t < NUM_TASKS; t++) {
  34.         taskIdPtr = (int *) malloc(sizeof(int));
  35.         *taskIdPtr = t;
  36.         printf("Creating thread %d\n", t);
  37.         rc = pthread_create(&threads[t], NULL, PrintHello, (void *) taskIdPtr);
  38.         if(rc) {
  39.             perror("Error :");
  40.             exit(BAD_EXIT);
  41.         }
  42.     }
  43.  
  44.     for(t = 0; t < NUM_TASKS; t++)
  45.     {
  46.     	pthread_join(threads[t], NULL);
  47.     }
  48.     return 0;
  49. }
Success #stdin #stdout 0s 4380KB
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stdin
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Standard input is empty
stdout
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Creating thread 0
Creating thread 1
Creating thread 2
Creating thread 3
Creating thread 4
Creating thread 5
Creating thread 6
Creating thread 7
Task id = 6, message = Japan: Sekai e konnichiwa!
Task id = 7, message = Latin: Orbis, te saluto!
Task id = 5, message = Russian: Zdravstvytye, mir!
Task id = 4, message = German: Guten Tag, Welt!
Task id = 3, message = Klingon: Nuq neH!
Task id = 2, message = Spanish: Hola al mundo
Task id = 1, message = French: Bonjour, le monde!
Task id = 0, message = English: Hello World!
https://ideone.com/5tAUMd
language:
C (gcc 8.3)
created:
7 years ago
visibility:
secret

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